Exam (elaborations)
DSC1520 EXAM PACK.
- Course
- Quantitative Modelling I
- Institution
- University Of South Africa
Exam of 68 pages for the course Quantitative Modelling I at University of South Africa (DSC1520 EXAM PACK.)
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Mathematical Modelling: DSC1520
LUCIANO SCHOOL OF LAW & SOCIAL SCIENCES [LSLSS]
March 8, 2015
Authored by: Tafadzwa Chikwadze
Downloaded by Vincent Cosmas (vincentcosmas92@gmail.com)
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1
Contents
FEEDBACK ON PREVIOUS EXAMINATION PAPERS ........................................................................................ 2
MAY/JUNE 2014 ........................................................................................................................................ 2
OCTOBER / NOVEMBER 2013 ................................................................................................................. 12
MAY/JUNE 2013 ...................................................................................................................................... 23
OCTOBER / NOVEMBER 2012 ................................................................................................................. 35
DSC1520 MAY /JUNE 2012 ...................................................................................................................... 46
OCTOBER/NOVEMBER 2011 ................................................................................................................... 56
LUCIANO SCHOOL OF LAW & SOCIAL SCIENCES [LSLSS]
Downloaded by Vincent Cosmas (vincentcosmas92@gmail.com)
, lOMoARcPSD|32110785
2
FEEDBACK ON PREVIOUS EXAMINATION PAPERS
MAY/JUNE 2014
Question 1
36 5 1
1+ x -
45 12 3
36 5 1
⟶ 1 + ( 45 𝑥 12
) -3
36 5 1
⟶ 1 + ( 45 𝑥 12
) -3
1 1
⟶ 1+3 -3
⟶ 1 option 5
Question 2
2 3
(2𝑎 2 𝑏 3 ) 𝑥 (𝑎𝑏 4 )
(2𝑎 3 𝑏 2 )4
(22 𝑎 2𝑥2 𝑏 3𝑥2 )(𝑎 3 𝑏 4𝑥3 )
⟶ 24 𝑎 3𝑥4 𝑏 2𝑥4
4𝑎𝑏 𝑥 𝑎 3 𝑏 12
⟶ 16𝑎 𝑏
𝑎𝑏
⟶ 4𝑎𝑏
𝑏 10
⟶ 4𝑎 5
(2)
Question 3
Discount by 30% means its 70% (100 – 30)
: 70% = R490
100% = ?
100
⟹ 70
X 490
⟹ R700 (1)
LUCIANO SCHOOL OF LAW & SOCIAL SCIENCES [LSLSS]
Downloaded by Vincent Cosmas (vincentcosmas92@gmail.com)
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